Avalog
Register
Get forecast notifications
Create an account to receive email notifications when forecasts are published.
Register
Login
Archived

Avalanche Forecast

Mar 5th, 2021–Mar 6th, 2021
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Jasper.

http://www.pc.gc.ca/apps/links/goto_e.asp?destination=

We are looking at a newly formed sun crust on solar aspects and a continuous wind slab development for this weekend.Heavily faceted snowpack below the surface should be thoroughly examined before committing to your line.

Weather Forecast

Saturday: Cloudy, isolated flurries. Precipitation: Trace. Alpine High -7 °C. Ridge wind southwest: 15-35 km/h. Sunday: Cloudy,  isolated flurries. Precipitation: Trace. Alpine  Low -12 °C, High -8 °C. Ridge wind southwest: 15-35 km/h. Monday: A mix of sun and cloud. Precipitation: Nil.  Alpine Low -14 °C, High -9 °C. Ridge wind west: 10-30 km/h. 

Snowpack Summary

The snowpack is highly variable throughout the forecast region. Warm temperatures have created thin crust on solar aspects at TL and BTL.  Upper snowpack, either wind or sun affected, overlies a still relatively supportive mid-pack in the Icefields area. Shallow snowpack areas are weak and failing within various faceted layers in test results.

Avalanche Summary

Numerous loose wet and slab avalanches on solar aspects up to size 2, mostly at TL and BTL throughout the forecast region observed on Thursday into Friday. Large natural slab avalanches observed in high alpine earlier in the week with no new activity reported in couple days.

Confidence

Intensity of incoming weather systems is uncertain on Saturday

Avalanche Problems

Wind Slabs

Wind slabs in the alpine and exposed treeline features have the potential for wide propagations across connected features.

  • Be aware of the potential for wide propagations due to the presence of hard windslabs.
  • If triggered the wind slabs may step down to deeper layers resulting in large avalanches.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 3

Deep Persistent Slabs

Caution in thin facetted snowpack areas where triggering is more likely. This is a low probability but high consequence problem.

  • Avoid shallow snowpack areas where triggering is more likely.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Unlikely - Possible

Expected Size: 1.5 - 3